Lists Review

Front

Which of the following is a valid list in JavaScript? <1, 2, 3>, {1, 2, 3}, (1, 2, 3), [1, 2, 3]

Back

[1, 2, 3]

Front

Which one creates a list of three strings? Options: ["apple", "banana", "cherry"], ("apple", "banana", "cherry"), {"apple", "banana", "cherry"}, "apple", "banana", "cherry"

Back

["apple", "banana", "cherry"]

Front

Given:
var animals = ["cat", "dog", "bird", "bear"];
What does animals[0] return?

Back

cat

Front

Given:
var food = ["pizza", "tacos"];
appendItem(food, "salad");
What is the list now?

Back

["pizza", "tacos", "salad"]

Front

Given: var nums = [10, 20, 30, 40]; removeItem(nums, 1); What is the list now?

Back

[10, 30, 40]

Front

Given: var nums = [10, 20, 30, 40]; removeItem(nums, 1); What is now at index 1?

Back

30

Front

Given:
var letters = ["a", "b", "d"];
insertItem(letters, 2, "c");
What is the list now?

Back

The list is now ["a", "b", "c", "d"].

Front

You want to display "Level up!" 5 times. The program needs to remember how many times it has already displayed the message. Which of these pieces of information is most important for the program to keep track of using a variable? Options: How many characters are in "Level up!", A number that counts how many times the message has been shown, The name of the user

Back

A number that counts how many times the message has been shown

Front

A program is repeating a task and counting how many times it has run. Which of the following is the best way for the program to decide when to stop? When the computer gets tired, When the counter reaches a specific number, When the user closes the program, When the screen is full

Back

When the counter reaches a specific number

Front

A program wants to repeat an action 8 times. Which set of ideas below is necessary to make this work? A number that starts at 0, A check to see if the number is less than 8, A way to increase the number each time

Back

A number that starts at 0, A check to see if the number is less than 8, A way to increase the number each time